Carbureter.



Patented Oct. 22, 1912.

2 SHEETS-SHEET 1.

INVENTOR:

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0. BROWN. GARBU RETBR: APPLIOATION FILED 00124, 1909.

1 ,O42,077 Patented Oct. 22, 1912.

2 SHEETS-SHEET 2.

WITNESSES:

U IT D snares PATENT anion.

CLEMENT BROWN, 0]? BIRMINGHAM, ENGLAND.

. GARBURETER.

Specification of Letters Patent.

Application filed Qctober 4,

Patented Oct. 22, 1912. 1909. Serial No. 520,936.

which can -be quickly assembled or dismounted.

In order that this invention may be clearly understood and more readilycarried into practice, reference may be had to the appended explanatorydrawings, upon which Figure 1 is a sectional elevation of a carbureteraccording to the invention. Fig. 2 is an elevation of the upper part of.the structure shown in Fig. 1, looking in direction of arrow Y. Fig. 3is a sectional inverted plan on line w m Fig. 1. Fig. 4; is a sectionalelevation of mixing chamber blank. Fig. 5 is an elevation of oneof thecontrol valves. F 6 is a plan of the valve shown in Fig. 5. Fig. 7 is asectional elevation of the mixing chamber with the elbow in position.Fig. 7 is a plan of the mixing chamber in Fig. 7. Fig. 8 is an elevationof the elbow blank before attachment to the mixing chamber, and Fig. 8is'an end view thereof. Fig. 9 is a sectional elevation of the supportfor the bush of the control wire. Fig. 10 is an inverted plan, and Fig.11 is a sectional elevation of the cap of the mixing chamber.

In the drawings, the mixing chamber a is a cylindrical tubulus havingports 6, 0,10- cated about midway between its extremities anddiametrically opposite to each other. Supplementary uncarbureted airfrom the atmosphere enters the port I), and the combustiblecharge'egresses by way of the'port 0. The mixing chamber a ismanufactured from a plain tubular blank shown in Fig. 4:, having thesupplementary air inlet Z) and the mixture outlet 0, cut in theperiphery of the tubulus. The latter opening has its vertical marginal,edges parallel at the upper part and inclining inward at its lower partas shown the dotted lines in Fig. 2.

At the middle part of the mixing chamber a is attached an elbow (5formed of sheet metal, the partially finished blank being illustrated inFig. 8. The central-part d of the blank is at this stage fiat but theends (Z are semi-cylindrical, transverse slots 03 being cut in the blankat the juncture of the ends and the middle to allow of its being soformed. The blank is placed in position on the mixing chamber and benttherearound until the middle part (Z is cylindrical to fit the peripheryof the mixing chamber. It will be obvious that at this position thevertical axis of the two semi-cylindrical ends d lie in the samevertical plane and thus, form a seam. Around the horizontal arm of theelbow is placed an annular collar 6, the bore of which is coned out, thelargest diameter being remote from the mixing chamber.-

The horizontal arm of the elbow is expanded against the taper bore ofthe collar e and is also beaded over at its outer extremity 6 The elbowthus retains the collar in place. The collar periphery is screwed at eto receive a nut f. In the elbow mouth is disposed an axially splitcontractile ring 9 coned on its periphery 9' to fit the coned mouth ofthe elbow and cylindrical in its bore. An aperture f is provided in theface of the nut f, and a shoulder f to engage the outer face of thesplitring g. This arrangement avoids screw threads on the induction pipeas it will be obvious that by suitably rotating the nut f, the splitring is pressed into the coned mouth of the elbow and is therebycontracted onto the induction pipe. The carbureter can also be quicklyattached or detached. The mixing chamber has two outstandingcircumferential projections a formed upon it one above and one below theelbow; these prevent axial relative movement between the elbow and themixing chamber. The top edge of the latter is turned over to form alocking means for the cap of the chamber but will be described moreparticularly m connection with the valve structure.

At the top. part of the mixing chamber are disposed the valvecontrolling means comprising two sheet metal control members h, 7',arranged side by side to slide longitudinally and independently withinthe mixing chamber. The-valve it for the left half of the mixing chamberregulates the supplementary uncarbureted air port 25, while the member jon the right controls the mixture outlet port 0. These valves arepreferably semi-cylindrical or segmental and are open at the top,

' uniform I the upper collar 9*.

but closed at the bottom by transverse partitlons 7c, 7r. Resting on thepartitions 7.", 7a and arranged between the side walls face of theremovable cap on top of the chamber. About the middle of the parti tions7a, of the valves h and j are axially arranged nipples m, m, soldered tothe end of the flexible inextensible members a, a forming actuatingmeans for the valve, :1. flexible incompressible casing 0 surroundingeach inextensible member at, n.

- Each incompressible casing 0 is anchored in an adjustable stop pscrewed into a tapped bush 9 Fig. 9. This bush has two radial slots 9'inits periphery which extend the greater part of its length. The threadin the bush is slightly smaller in diameter at the part 9 cut by theslots 9* than at the upper unslotted part, while the thread on theperiphery of the screwed stop vp is of diameter.- VVhen the stop isscrewed into the bush, the slotted part of the latter is able to expandand exert a contractile effort on the stop. The latter is thusfrictionally retained in the desired position without a locknut. Thebush is fixed to the cap 1 by collars 9 g near the one end of the bush,one of the collars being at the upper face and the other at the lower.That part of the bush extremity shown by the dotted lines in Fig. 9 isformed parallel and is inserted in a-naperture r in the cap r, beingthen turned or beaded over to form The cap 71 is pressed. up from sheetmetal and has its upper face perforated to accommodate the bushes Q. Twoledges 1* formed on the lower face each extend through a quarter of acircle and are sepa rated by interspaces r also extending through aquarter'of a circle. Said cap fits the top of the mixing chamber. Thelatter has its upper marginal edge turned over to form a flange a thesaid flange not being continuous but interrupted by interspaces asimilar in extent to those in the cap. The upper faces of the ledges rengage the lower face of the flange a when in situ. be readilyunderstood thatthe cap, valves and appurtenant parts can be collectivelyremoved from the mixing chamber by simply rotating the cap through aquarter. of a revolution and withdrawing it. By a reverse process theseparts can be attached, the ledges r engaging the flange if.

The mixing chamber at its lower part is attached to a platform 3circular in plan and having a boss 8 for entrance of liquid fuel.Encircling the mixing chamber and contacting the periphery thereof is asplit ring t similar to the one 9 in the coned mouth of the elbow exceptthat it is formed with two circular apertures 4' -tracting the splitcollar to grip said It will elbow connection,

of two cones base to base, that is the section is an isoceles trianglewith the base as bore. The lower conical face 15 of the split ring 25fits into a coned recess in the platform while its upper conical face 26is engaged by the conical interior of a nut to. The nut n is screwthreaded on its periphery a to engage a tapped recess in the platformimmediately above the coned recess. To release the mixing chamber fromthe platform the nut u is rotated through the split ring t to expand. Bythe double cone a contractile grip is exerted along the entire lateralbore of the ring.

The nozzle 2; from which the liquid fuel is sprayed has a conical seat42 which pre vents the fuel from escaping. The .lower part of the nozzlehas a depending stem '1; which spring a bearing against a removable capw at its lower side and pressing the conical part a of the nozzle intopetrol. tight contact with its seat. a: is a fiber joint washer. By thisconstruction the nozzle may be moved without disturbing the fuelconnections. Vertical holes w in the mixing chamber platform allow themain air supply to enter and pass through the choke tube y.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

1. A carbureter comprising a mixing chamber having inlet and outletports, two independently movable hollow valve members arranged'side byside to slide longitudinally within the mixing chamber and control saidports, each of said valve members having an open end, and compressionsprings contained in said hollow valve members extending through saidopen ends to bear against the mixing chamber.

2. In a carbureter, the combination of a mixing chamber having an inletport and an outlet port, sliding semi-cylindrical members controllingsaid ports, a quickly detachable cap'afixed' to the top of said chamher,a split collar encircling said chamber and having a coned periphery, aplatform having a coned mouth and means for conchamber.

3. In a carbureter, the combination of a mixing chamber having an inletport and an outlet port, sliding semi-cylindrical members controllingsaid ports, a quickly detachable cap aiiixed to the top of said chamber,an elbow connection for egress from said chamher, a split collar havinga coned periphery adapted to fit into the coned mouth 0 said said collarinto said mouth.

4. In a carburetor, the combination of a mixing chamber having an inletport and an outlet port sliding semi-cylindricalmembers controlling saidports, a quickly dea small angle to allow is encircled by a coiledcompression and means for pressing 1 5 taehable cap affixed to the topof said chamher, a tapped bush secured to said cap, and a stop screwedtherein said bush being of slightly smaller bore than the externaldiameter of-the stop.

5. In a carbnreter the combination of a mixing chamber having an inletport for the air and an outlet port for the mixture of air and gas, andtwo sliding semi-cylindrical members arranged in the mixing chamber sideby side to control said ports.

6. A oarbureter comprising a mixing chamber having inlet and outletports, a removable cap for the mixing chamber, two independently movablehollow valve memt eples of this patent may be bers arranged side by sideto slide longitudinally within the mixing chamber and control saidports, the end of each of. said valve members adjacent to said cap beingopen, and compression springs contained in said hollow valve membersextending through said open ends to bear against said En Witness whereofIhave hereunto set my hand in the presence of two witnesses 0. BROWN.Witnesses:

ROWLAND L. Goon), WILLIAM A. DAVIS.

obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G.

